3.000000000	(2/3)^k
30.194034329	k^-0.5
0.996015936	1/k(k+1)
4.806858125	Flint Hills
42.991485930	Cookson Hills
6.100675249	Harmonic
1.640942056	Riemann Zeta
0.691151181	Alternating Harmonic
0.784398167	Gregory